Scattering of cold electrons by ammonia, hydrogen sulfide, and carbonyl sulfide

N. C. Jones, D. Field, S. L. Lunt, and J.-P. Ziesel
Phys. Rev. A 78, 042714 – Published 29 October 2008

Abstract

Experimental data obtained with a high-resolution transmission experiment are presented for the scattering of electrons in the energy range 20meV10eV for NH3, 25meV10eV for H2S, and 15meV2.5eV for OCS. Data include cross sections for both integral scattering and scattering into the backward hemisphere, the latter up to 650meV impact energy, with an electron energy resolution of between 1.6 and 3.5meV. The new data allow the first detailed comparison with theory for the energy regime dominated by rotationally inelastic and elastic scattering for these species. It is evident that theory still lacks quantitative predictive power at low energy, although qualitative agreement is consistently good for all three species. A discussion is given of the possible presence of a virtual state in OCS scattering as recently proposed on theoretical grounds.

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  • Received 2 July 2008

DOI:https://doi.org/10.1103/PhysRevA.78.042714

©2008 American Physical Society

Authors & Affiliations

N. C. Jones1, D. Field2,*, S. L. Lunt3, and J.-P. Ziesel4

  • 1Institute for Storage Ring Facilities (ISA), University of Aarhus, DK-8000 Aarhus C, Denmark
  • 2Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark
  • 3Kittiwake Developments Ltd, Littlehampton, West Sussex BN17 7LU, United Kingdom
  • 4Laboratoire Collisions Agrégats Réactivité (CNRS-UPS UMR5589), Université Paul Sabatier, 31062 Toulouse, France

  • *Author to whom correspondence should be addressed. dfield@phys.au.dk.

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Issue

Vol. 78, Iss. 4 — October 2008

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